This article – review – „From semi-education till non-education“ – deals with K. P. Liessmann´s book „Theory of non-education“; in the track of it, it thinks over and thinks to the end questions as follows: 1. What is the former founding and aiming relation to the idea of education? 2. What is the present (founding out of it and aiming against it) relation to the idea of education? 3. What is the founding and aiming contra-idea of the contemporary „education“? 4. What is the founding and aiming contra-idea of „education“ in contemporary „educational institutions“ (especially in schools as „educational institutions“)? 5. What is the essential foundation of the founding and aiming contra-idea of the contemporary „education“ (i. e. also: what is the essential foundation of the founding and aiming contra-idea of „education“ in contemporary „educational institutions“, i. e. also in schools as „educational institutions“)? – This article – review – „From semi-education till non-education“ –, dealing with K. P. Liessmann´s book „Theory of non-education“ and (in the track of it) thinking over and thinking to the end those questions, adds an appendix concerning the structure of the contemporary educational system; according to it, the structure of the contemporary educational system consists in (higher) schools-factories and (lower) school-sewers as well as in an association of (higher) schools-factories and (lower) schools-sewers, i. e. in the association by a sliding limit, namely by a limit sliding only upwards, not downwards.